84104991 has 12 divisors (see below), whose sum is σ = 121695600. Its totient is φ = 55972800.

The previous prime is 84104989. The next prime is 84105029. The reversal of 84104991 is 19940148.

It is not a de Polignac number, because 84104991 - 2¹ = 84104989 is a prime.

It is a super-2 number, since 2×84104991² = 14147299022220162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84104921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2410 + ... + 13191.

It is an arithmetic number, because the mean of its divisors is an integer number (10141300).

Almost surely, 2^84104991 is an apocalyptic number.

84104991 is a deficient number, since it is larger than the sum of its proper divisors (37590609).

84104991 is a wasteful number, since it uses less digits than its factorization.

84104991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16206 (or 16203 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 84104991 is about 9170.8773298960. The cubic root of 84104991 is about 438.1343023443.

The spelling of 84104991 in words is "eighty-four million, one hundred four thousand, nine hundred ninety-one".